I think it's described as a Medieval Fair, so we'll do some Brawls and Farandoles. I.e. organised chaos. So the individual dances will last till the band stops.
And since it's to celebrate St. Georges day I thought we'd dress the dances up as a contest between a team of Geoges and a team of Dragons. Since the dances won't be 'authentic' anyway we may as well descend into fantasy! There is also a dragon trail in the town, as well as guided tours by the museum.
The Forlorn Hope will be bringing their Hurdy Gurdies, Crumhorns, bagpipes etc. to play for us.